Table 1.
1H NMR and 13C NMR data for 1 (CD3OD)a
| no. | δH (mult, J in Hz) | δC (mult) | HMBC |
|---|---|---|---|
| 1 | 10.10 (d, 7.9) | 194.4 (d) | C-2 |
| 2 | 6.04 (d, 7.9) | 126.3 (d) | C-4, C-16 |
| 3 | 160.9 (s) | ||
| 4 | 137.2 (s) | ||
| 5 | 6.23 (t, 7.1) | 136.8 (d) | C-3, C-6, C-7, C-17 |
| 6 | 2.34 m | 26.9 (t) | C-5, C-7, C-8 |
| 7a | 1.65 m | 33.2 (t) | C-5, C-6, C-8 |
| 7b | 1.44 m | ||
| 8ax | 3.39 m | 80.3 (d) | |
| 9eq | 1.85 m | 34.3 (d) | C-11 |
| 10eq | 1.90 m | 40.9 (t) | C-11 |
| 10ax | 1.65 m | ||
| 11ax | 3.42 m | 65.0 (d) | C-12 |
| 12ax | 3.08 (ddd, 2.6, 7.0, 9.3) | 83.1 (d) | |
| 13a | 3.53 (dd, 2.6, 14.0) | 42.5 (t) | C-14 |
| 13b | 3.32 (dd, 7.1, 14.0) | C-14 | |
| 14 | 173.7 (s) | ||
| 15 | 1.95 s | 22.5 (q) | C-14 |
| 16 | 2.33 s | 14.6 (q) | C-2, C-3, C-4 |
| 17 | 1.86 s | 14.0 (q) | C-3, C-4, C-5 |
| 18 | 0.95 (d, 6.9) | 13.1 (q) | C-8, C-9, C-10 |
a
Referenced to residual CD3OD solvent signals at δH 3.30 ppm and δC 49.0 ppm. 1H and 13C NMR measurements were made at 500 and 125 MHz, respectively. Multiplicities for 13C signals are from a DEPT experiment.